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Dumdum vs Undefined - What's the difference?

dumdum | undefined |

As a noun dumdum

is a bullet, with a soft nose, that expands upon impact to cause a gaping wound or dumdum can be an ignorant person, an idiot.

As an adjective undefined is

lacking a definition or value.

dumdum

English

Etymology 1

From , a city in India where the type of bullet was developed, from (etyl)

Alternative forms

* dum-dum

Noun

(wikipedia dumdum) (en noun)
  • A bullet, with a soft nose, that expands upon impact to cause a gaping wound.

    • Etymology 2

    From the adjective dumb

    Noun

    (en noun)
  • An ignorant person, an idiot
    • You're such a dumdum .

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined